<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    *{
      margin: 0;
      padding: 0;
    }
    .box{
      width: 100px;
      height:100px;
      border-radius: 50%;
      margin: 200px auto;
      background-color: #f00;
      animation: onedaymove 5s linear infinite;
    }
    .box p{
      width: 40px;
      height: 40px;
      margin: 30px auto;
    }

    @keyframes onedaymove {
        0% {
          transform: translateX(0,0);
        }
        25% {
          transform: translate(500px,0);
        }
        50% {
          transform: translate(500px, 500px)
        }
        75% {
          transform: translate(0,500px);
        }
        100% {
          transform: translateY(0,0);
        }
      }
  </style>
</head>
<body>
  <div class="box">
    <p>大头儿子</p>
  </div>
</body>
</html>